The Collaborative International Dictionary of English v.0.48:

Talkative \Talk"a*tive\, a.
   Given to much talking.
   [1913 Webster]

   Syn: Garrulous; loquacious. See Garrulous.
        [1913 Webster] -- Talk"a*tive*ly, adv. --
        Talk"a*tive*ness, n.
        [1913 Webster]

WordNet (r) 3.0 (2006):

talkatively
    adv 1: in a chatty loquacious manner; "`When I was young,' she
           continued loquaciously, `I used to do all sorts of
           naughty things'" [syn: loquaciously, garrulously,
           talkatively, talkily]